I have an iPhone 4 jailbroken with 4.3.3 software and I can't update to iOS5. HELP!!!

[Macc55]

Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_3 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5)

Why can I update? I keep getting errors.

 

[b166er]

the easiest fix to this is to update on a computer that you usually do not sync with, then restore on your own usual computer.